Add support for get_survey() reporting. Current channel and noise-floor are
reported, other parameters such as scan, busy, TX and RX time are not
immediately available.
Noise is a useful metric to report, so bring it out now.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@xxxxxxxxxx>
---
drivers/net/wireless/ath/wcn36xx/main.c | 44 +++++++++++++++++++++++++
1 file changed, 44 insertions(+)
diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index 0e1f3dc4f69d4..af2b6f7c34137 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -1357,6 +1357,49 @@ static void wcn36xx_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
}
}
+static int wcn36xx_get_survey(struct ieee80211_hw *hw, int idx,
+ struct survey_info *survey)
+{
+ struct wcn36xx *wcn = hw->priv;
+ struct ieee80211_supported_band *sband;
+ struct wcn36xx_chan_survey *chan_survey;
+ int band_idx;
+ unsigned long flags;
+
+ sband = wcn->hw->wiphy->bands[NL80211_BAND_2GHZ];
+ band_idx = idx;
+ if (band_idx >= sband->n_channels) {
+ band_idx -= sband->n_channels;
+ sband = wcn->hw->wiphy->bands[NL80211_BAND_5GHZ];
+ }
+
+ if (!sband || band_idx >= sband->n_channels)
+ return -ENOENT;
+
+ spin_lock_irqsave(&wcn->survey_lock, flags);
+
+ chan_survey = &wcn->chan_survey[idx];
+ survey->channel = &sband->channels[band_idx];
+ survey->noise = chan_survey->rssi - chan_survey->snr;
+ survey->filled = 0;
+
+ if (chan_survey->rssi > -100 && chan_survey->rssi < 0)
+ survey->filled |= SURVEY_INFO_NOISE_DBM;
+
+ if (survey->channel == wcn->channel)
+ survey->filled |= SURVEY_INFO_IN_USE;
+
+ spin_unlock_irqrestore(&wcn->survey_lock, flags);
+
+ wcn36xx_dbg(WCN36XX_DBG_MAC,
+ "ch %d rssi %d snr %d noise %d filled %x freq %d\n",
+ HW_VALUE_CHANNEL(survey->channel->hw_value),
+ chan_survey->rssi, chan_survey->snr, survey->noise,
+ survey->filled, survey->channel->center_freq);
+
+ return 0;
+}
+
static const struct ieee80211_ops wcn36xx_ops = {
.start = wcn36xx_start,
.stop = wcn36xx_stop,
@@ -1385,6 +1428,7 @@ static const struct ieee80211_ops wcn36xx_ops = {
.ipv6_addr_change = wcn36xx_ipv6_addr_change,
#endif
.flush = wcn36xx_flush,
+ .get_survey = wcn36xx_get_survey,
CFG80211_TESTMODE_CMD(wcn36xx_tm_cmd)
};
--
2.33.0
